This is a note to let you know that I've just added the patch titled

objtool: Don't report end of section error after an empty unwind hint

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: objtool-don-t-report-end-of-section-error-after-an-empty-unwind-hint.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 00d96180dc38ef872ac471c2d3e14b067cbd895d Mon Sep 17 00:00:00 2001

From: Josh Poimboeuf jpoimboe@redhat.com Date: Mon, 18 Sep 2017 21:43:30 -0500 Subject: objtool: Don't report end of section error after an empty unwind hint

From: Josh Poimboeuf jpoimboe@redhat.com

commit 00d96180dc38ef872ac471c2d3e14b067cbd895d upstream.

If asm code specifies an UNWIND_HINT_EMPTY hint, don't warn if the section ends unexpectedly. This can happen with the xen-head.S code because the hypercall_page is "text" but it's all zeros.

Signed-off-by: Josh Poimboeuf jpoimboe@redhat.com Cc: Andy Lutomirski luto@kernel.org Cc: Boris Ostrovsky boris.ostrovsky@oracle.com Cc: Jiri Slaby jslaby@suse.cz Cc: Juergen Gross jgross@suse.com Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Gleixner tglx@linutronix.de Link: http://lkml.kernel.org/r/ddafe199dd8797e40e3c2777373347eba1d65572.1505764066... Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/objtool/check.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -1757,11 +1757,14 @@ static int validate_branch(struct objtoo if (insn->dead_end) return 0;

- insn = next_insn; - if (!insn) { + if (!next_insn) { + if (state.cfa.base == CFI_UNDEFINED) + return 0; WARN("%s: unexpected end of section", sec->name); return 1; } + + insn = next_insn; }

return 0;

Patches currently in stable-queue which might be from jpoimboe@redhat.com are

queue-4.14/objtool-don-t-report-end-of-section-error-after-an-empty-unwind-hint.patch queue-4.14/x86-cpufeatures-re-tabulate-the-x86_feature-definitions.patch